Hyenas are mammals of Africa and Asia. Hyenas are gray, brown, or yellowish. Some have stripes or spots. There are three species of hyena: spotted, striped, and brown. The spotted hyena is known for its hunting cry, which sounds like human laughter. It is also the largest species. Female spotted hyenas are larger than males and measure about 1.8 meters long and weigh 80 kilograms.
Hyenas have strong jaws and teeth that are strong enough to crush bones. The neck of the hyena is rather elongate, and the hind legs are somewhat smaller and lower than the forelegs.
Hyenas live on dry grasslands with few trees. They find shelter in caves or empty burrows and are active at night. They live alone or in packs. Spotted hyenas may form packs of 80 or more animals.